Dependence of the coercive force on the magnetic field sweep rate in (PrDy)(FeCo)B alloys |
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| Authors: | E I Kunitsyna O V Koplak V V Kucheryaev D V Korolev V P Piskorskii A Bezverkhnii R B Morgunov |
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| Institution: | 1.Institute of Problems of Chemical Physics,Russian Academy of Sciences,Chernogolovka, Moscow oblast,Russia;2.All-Russia Research Institute of Aviation Materials,Moscow,Russia;3.Tambov State Technical University,Tambov,Russia |
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| Abstract: | The dependence between the coercive force and the average hysteresis loop record time was revealed in sintered (Pr1 – x Dy x )13(Fe1 – y Co y )79B8 magnets. The coercive force was established to grow by 22% with an increase in the average hysteresis loop sweep rate within a range of 1.1 × 102–3 × 105 Oe/min, obeying a logarithmic dependence on the loop passage velocity with saturation at low rates. Some domain structure transformations produced by a magnetic field in the process of magnetization were established by magnetic force microscopy. |
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